Data-backed planning intelligence · 3,780,000+ decisions analysed across England

Most Common Planning Applications in Runnymede

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Runnymede is 37.0% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

13,701 real decisions·17 project types·Updated August 2026
94.1%
Safest: Basement
57.1%
Lowest: HMO
37.0%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Basement45843127
94.1%
2Conservatory52948940
92.4%
3Wraparound Extension41738532
92.3%
4Side Extension1,8291,661168
90.8%
5Front Extension59954455
90.8%
6Rear Extension3,5633,120443
87.6%
7Hip-to-Gable Conversion20217725
87.6%
8Garage / Parking2,9142,541373
87.2%
9Loft Conversion69460589
87.2%
10Outbuilding1,120975145
87.1%
11Annex1119615
86.5%
12Dormer1,3101,124186
85.8%
13Extension (General)67857999
85.4%
14New Build960804156
83.8%
15Change of Use (Residential)658470188
71.4%
16Flat Conversion775423
70.1%
17HMO422418
57.1%
See how this applies to your postcode →

These are council averages. Your property is specific.

A basement application has a 94.1% approval rate. HMO? Just 57.1%.
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What the data tells us

1
The range is massive: 57.1% to 94.1%. Choosing the right project type — or framing your application correctly — can dramatically affect outcomes.
2
Visibility drives scrutiny. Project types that change the external appearance — dormers, loft conversions, hip-to-gable — face more resistance than those that don't. The more visible your proposal, the more carefully it needs designing.
3
These are council-wide averages. Your ward, your street and your immediate neighbours all shift the odds. The comparable decisions near your property are the best indicator of outcome.

Before you spend £5,000+ on architects and drawings

1,758 planning applications in Runnymede have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A free, property-specific report shows you what gets approved — and what gets refused — near your property.

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More Runnymede planning data

Methodology: Classifies 13,701 decisions in Runnymede into residential project types using keyword matching against proposal descriptions (matching generate_site_data.py subtype rules). A single application may appear in multiple categories. Data from Runnymede Council's public planning portal, January 2020 to August 2026. Full methodology →
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